Troy Rail Section M-LOK 5.5 Blk SRAI-MM1-50BT-00 MM1-50BT-00. 5in Black: Manufacturer: Troy Color: Black Finish: MIL-A-8625 Type III Hard Coat Anodized Fabric/Material: Aircraft Aluminum Gun Rail: Picatinny Gun Type: Rifle Gun Model: M4 AR-15 Length:...